TESTACEOUS FISH. 



355 



of their animals, upon shore. Those which 

 are fished up from the deep, are called by 

 the Latin name Pelagii ; those that are 

 cast upon shore are called Littorales. Many 



FAMILY 1. LIMACINEA. 



Vitrina elongate, pi. 31 . fig. 84. Testacetta Haliotoidea, 

 f. 85. Limax rufus, f. 86. Parmacella Olivieri, f. 87. 

 Ondtidium. Destitute of a shell. P. Calyculata, f. 108. 



SECTION II. HYDROBRANCHI.E. 



Bfc 



FAMILY II. LAPLYSIACEA. 

 DolabeUa callosa, pi. 31. fig. 88. Laplysia radiata, f. 



FAMILY III. BULLACEA. 



Bulla amygdala, pi. 31. fig. 90. BidUea catena, f. 91. 

 *Utriculvs obtusa;L 110. *Akera flextiis, f. 109. Acera. 

 Destitute of a shed. 



FAMILY IV. CALY PTRACEA. 



Ancylusfluviattiis, pi. 31. fig. 92. Crepidula fornicata, 

 f. 93. Calyptreea sinense, f. 94. Pileopsis Ungarica, f. 95. 

 Fisurella Grceca. f. 96. *Sipho sti-iata, f. 113. Emargi- 

 nulafissura, f. 97. Pannophorus Australia, f. 98. 



FAMILY V. SEMPHYLLIDIACEA. 



Umbrella Indica, pi. 31. fig. 99. Pleurobranckus plu- 

 mula,'f. 100. 



FAMILY VI. PHYLLIDIACEA. 



Patella vulqata, pi. 31. fig. 101. Cliiton marginatus, f. 

 102. ChitonMus striatus, f. 103. Phyllidia. Destitute 

 of a shell. 



FAMILY VII. TRITONIACEA. 



Doris, Tethys, Scylkea, Titonia, Eolis, and Glaucus. 

 Destitute of shells. 



ORDER V. PTEROPODA. 



Destitute of foot and arms ; two opposite fins ; body 

 frue. Pneumodermon. Shelless. Cymbulia proboscidea, 

 pi. 31. fig. 104. Limacina helicialis, f. 105. Cleodorapy- 

 ramidata, f. 106. Clio. Destitute of a shell. Hydlcea 

 cuspidata,f. 107. 



CLASS II. CONCHIFERA. BIVALVES. 



Animals soft, inarticulated, without head or eyes, and 

 adhering^ to a bivalve shell ; having external brancliise, 

 simple circulation, and a unilocular heart. 



ORDER. I. MONOMYARIA. 



With one muscular attachment, and one subventral 

 muscular impression. 



SECTION I. No LIGAMENT. 

 FAMILY I. BRACHIOPODA. 



Lingula anatina, pi. 32. fig. 1. Terebratula vitrea, f. 3. 

 Orbicula Norwegica, f. 2. 



FAMILY II. RUDISTA. 



Crania striata, pi. 32. fig. 4. Discina ostreoides,f.b5. 

 Gen. Birostritus, Calicola, Radiolites, and Sphaerulites, 

 fossil. 



SECTION II. LIGAMENT MARGINAL. 

 FAMILY I. OSTRACEA. 



Anomia EphippJiium, pi. 32. fig. 6. Placuna setta, f. 

 7. VidseUa spongiarum, f. 8. Ostrea cornucopia, f. 9. 

 Grypltcea secunda', f. 1 0. 



FAMILY II. PECTINIDES. 



Podopsis truncata,Tp\. 32. fig. 11. Spondylus spatulifor- 

 mis. f. 12. Plicatula cristata, f. 13. Pecten radtda, f. 14. 

 Phlagiostoma semilunaris, f. 15. Lima fragilis, f. 16. 

 Pedum spondyloideum, f. 17. 



of the pelagii are never seen upon shore ; they 

 continue in the depths where they are bred ; 

 and we owe their capture only to accident. 

 These, therefore, are the most scarce shells, 



SECTION III. LIGAMENT ELONGATED AND MARGINAL. 

 FAMILY I. MALLEACEA. 



Meleagrina margaritifera, pi. 32. fig. 18. Avicula obli- 

 qua, f. 1 9. Malleus vulgaris, f. 20. Perna isognomum, f. 

 21 . Crenatula phasianoptera, f. 22. 



FAMILY II. MYTILACEA. 



Pinna ekgans, pi. 32. fig. 23. MytUus Afer, f. 24. 

 Modiola papuana, f. 25. 



FAMILY III. TRIDACNITES. 



Hippopus maculatus, pi. 32. fig. 26. Tridacna squamo- 

 sa, f. 27. 



ORDER II. DlMYARIA. 



Muscular impressions two, separate and lateral. 



SECTION I. IRREUULAR AND ALWAYS INEQUIVALVB. 



FAMILY I. CAMACEA. 



Etheria ettiptica, pi. 32. fig. 28. Ckama arcinetta, f. 29. 

 Diceras ariettna, f. <JO. 



SECTION II. LAMELLIPKDES. 



FAMILY I. NAYADES. 



Inhabit fresh water. Iridina exotica, pi. 32 fig. 31. 

 Anadonta cygnea, f. 32. Hyria corrugata, f. 33. Unto ir- 

 roratus, f. 34. 



FAMILY II. TRIGONACEA. 



Casfalia ambigua, pi. 32. fig. 35. Trigoma, scabra, f. 36. 

 FAMILY III. ARCACEA. 



Nucula tenuis, pi. 32. fig. 37. Pectunculus pilosus, f 

 38. Area tortuosa, f. 39. CucuRcea, auriculifera, f. 40. 



FAMILY IV. CARDIACEA. 



Isocardia Moltkiana, pi. 32. fig. 41. Hiatella arctioa, f. 

 42. Cypricardia coralliophaga, f. 43. Cardita crassKostu, 

 f. 44. Cardium elongatum, \. 45. 



FAMILY V. OONCHACEA. 



Venerkardia imbricata, pi. 32. fig. 46. *Ortygia stdca- 

 ta, f. 47. Venus verrucosa, f. 48. Cytherea erycina, f. 49 

 *Eamleta lincta, f. 50. Cyprina Islandica. f. 51. *Lascea 

 rubra, f. 52. Galathea radiata, f. 53. (Jyrena fuscata, f. 

 54. Cydas cornea, f. 55. *Pisidium obltqua, f. 56. 



SECTION III. TENUIPEDES. 

 FAMILY I. NYMPHACEA. 



Crassina stdcata, pi. 32. fig. 57. Capsa Braziliensis, f. 

 58. Donax dentictdata, f. 59. Lucina carnaria.t. 60. 

 *Mysia rotundata, f. 61. Corbis lamellosa, f. 62. *Arco- 

 paffia crassa,f. 63. Tellinides roseus, f. 64. Tettinapuni- 

 cea, f. 65. Psammotcea variegata, f. 66. Psammolna ves- 

 pertina, f. 67. Sanguinolaria Occtdens, f. 68. 



FAMILY II. LITHOPHAGI. 



Venempis irus, pi. 32. fig. 69. Petricola Pholadiformis, 

 f. 70. Saxicava Pr<ecisa,t 71. 



FAMILY III. CORBULACEA. 



Pandora rostrata, pi. 32. fig. 72. Corbula sulcata, f. 

 73. 



FAMILY IV. MACTRAC.EA. 

 Amphidesma Ludnalis, pi. 32. fig. 74. "Solemya Medi- 



